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240 lines
10 KiB
240 lines
10 KiB
4 months ago
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--- |
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; RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
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; Created from:
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; void sink(int a);
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; void __attribute((always_inline)) f(int a) { sink(a); }
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; void foo(int i) {
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; f(i);
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; if (i)
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; f(i);
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; f(i);
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; }
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;
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; This test verifies that LiveDebugValues doesn't propagate DBG_VALUEs into
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; basic blocks that are beyond the scope of the source variable.
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;
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; CHECK: ![[F_SP:[0-9]+]] = distinct !DISubprogram(name: "f", {{.*}})
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; CHECK: ![[A_VAR:[0-9]+]] = !DILocalVariable(name: "a",{{.*}})
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; CHECK: ![[I_VAR:[0-9]+]] = !DILocalVariable(name: "i",{{.*}})
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; CHECK: ![[I_LOC:[0-9]+]] = !DILocation(line: 4, column: 14, scope: !{{[0-9]+}})
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; CHECK: ![[INLCS1:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS1:[0-9]+]])
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; CHECK: ![[CS1]] = distinct !DILocation(line: 5, column: 3, scope: !{{[0-9]+}})
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; CHECK: ![[INLCS2:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS2:[0-9]+]])
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; CHECK: ![[CS2]] = distinct !DILocation(line: 7, column: 5, scope: !{{[0-9]+}})
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; CHECK: ![[INLCS3:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS3:[0-9]+]])
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; CHECK: ![[CS3]] = distinct !DILocation(line: 8, column: 3, scope: !{{[0-9]+}})
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;
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; CHECK: bb.1.if.then:
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; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
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; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location
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; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS2]]
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; CHECK: bb.2.if.end:
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; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
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; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location
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; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS3]]
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;
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; ModuleID = 'livedebugvalues-limit.ll'
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source_filename = "livedebugvalues-limit.c"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx"
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; Function Attrs: alwaysinline nounwind ssp uwtable
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define void @f(i32 %a) local_unnamed_addr #0 !dbg !7 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !13), !dbg !14
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tail call void @sink(i32 %a) #4, !dbg !15
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ret void, !dbg !16
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}
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declare void @sink(i32) local_unnamed_addr
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; Function Attrs: nounwind ssp uwtable
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define void @foo(i32 %i) local_unnamed_addr #2 !dbg !17 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !19, metadata !13), !dbg !20
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tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !21
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tail call void @sink(i32 %i) #4, !dbg !23
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%tobool = icmp eq i32 %i, 0, !dbg !24
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br i1 %tobool, label %if.end, label %if.then, !dbg !26
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if.then: ; preds = %entry
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tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !27
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tail call void @sink(i32 %i) #4, !dbg !29
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br label %if.end, !dbg !30
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if.end: ; preds = %if.then, %entry
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tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !31
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tail call void @sink(i32 %i) #4, !dbg !33
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ret void, !dbg !34
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #4
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attributes #0 = { alwaysinline nounwind ssp uwtable }
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attributes #2 = { nounwind ssp uwtable }
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attributes #3 = { nounwind readnone }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "livedebugvalues-limit.c", directory: "/Volumes/Fusion/Data/llvm")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)"}
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!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10)
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!13 = !DIExpression()
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!14 = !DILocation(line: 3, column: 41, scope: !7)
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!15 = !DILocation(line: 3, column: 46, scope: !7)
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!16 = !DILocation(line: 3, column: 55, scope: !7)
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!17 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !18)
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!18 = !{!19}
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!19 = !DILocalVariable(name: "i", arg: 1, scope: !17, file: !1, line: 4, type: !10)
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!20 = !DILocation(line: 4, column: 14, scope: !17)
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!21 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !22)
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!22 = distinct !DILocation(line: 5, column: 3, scope: !17)
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!23 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !22)
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!24 = !DILocation(line: 6, column: 7, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !17, file: !1, line: 6, column: 7)
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!26 = !DILocation(line: 6, column: 7, scope: !17)
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!27 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !28)
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!28 = distinct !DILocation(line: 7, column: 5, scope: !25)
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!29 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !28)
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!30 = !DILocation(line: 7, column: 5, scope: !25)
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!31 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !32)
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!32 = distinct !DILocation(line: 8, column: 3, scope: !17)
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!33 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !32)
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!34 = !DILocation(line: 9, column: 1, scope: !17)
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...
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---
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name: f
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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liveins:
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- { reg: '$edi' }
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calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx',
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'$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15',
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'$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d',
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'$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 8
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offsetAdjustment: 0
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maxAlignment: 0
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adjustsStack: false
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hasCalls: false
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maxCallFrameSize: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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fixedStack:
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- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
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body: |
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bb.0.entry:
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liveins: $edi, $rbp
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frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa_offset 16
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CFI_INSTRUCTION offset $rbp, -16
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$rbp = frame-setup MOV64rr $rsp
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CFI_INSTRUCTION def_cfa_register $rbp
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DBG_VALUE $edi, _, !12, !13, debug-location !14
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$rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !15
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TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !15
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...
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---
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name: foo
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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liveins:
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- { reg: '$edi' }
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calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx',
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'$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15',
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'$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d',
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'$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 24
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offsetAdjustment: -8
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maxAlignment: 0
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adjustsStack: true
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hasCalls: true
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maxCallFrameSize: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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fixedStack:
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- { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' }
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- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16 }
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body: |
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bb.0.entry:
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successors: %bb.2.if.end, %bb.1.if.then
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liveins: $edi, $rbx, $rbp
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frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa_offset 16
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CFI_INSTRUCTION offset $rbp, -16
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$rbp = frame-setup MOV64rr $rsp
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CFI_INSTRUCTION def_cfa_register $rbp
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frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
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frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION offset $rbx, -24
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DBG_VALUE $edi, _, !19, !13, debug-location !20
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$ebx = MOV32rr $edi
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DBG_VALUE $ebx, _, !12, !13, debug-location !21
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DBG_VALUE $ebx, _, !19, !13, debug-location !20
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CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !23
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TEST32rr $ebx, $ebx, implicit-def $eflags, debug-location !24
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JCC_1 %bb.2.if.end, 4, implicit $eflags
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bb.1.if.then:
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successors: %bb.2.if.end
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liveins: $ebx, $rbp
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DBG_VALUE $ebx, _, !19, !13, debug-location !20
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DBG_VALUE $ebx, _, !12, !13, debug-location !27
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$edi = MOV32rr $ebx, debug-location !29
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CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !29
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bb.2.if.end:
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liveins: $ebx, $rbp
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DBG_VALUE $ebx, _, !19, !13, debug-location !20
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$edi = MOV32rr killed $ebx, debug-location !33
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$rsp = ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !33
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DBG_VALUE $ebx, _, !12, !13, debug-location !31
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$rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !33
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$rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !33
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TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !33
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...
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